How do I troubleshoot print cartridge problems on the HP Deskjet F4100?

Remove the black print cartridge from the right slot, being careful not to touch the ink nozzles or copper-colored contacts, and check for damage. Also confirm that the plastic tape covering the ink nozzles has been removed using the pink pull tab if still present. Reinsert the cartridge by sliding it forward until it clicks into the socket, then repeat the process for the tri-color cartridge on the left. If the problem persists, you may need to print a self-test report or clean the print cartridges using the onscreen Help. (Page 12)